A plumber charges $50 for a house call plus $40 for each hour worked. Let h represent the number of hours worked. Write an expression that shows how much the plumber charges for a job lasting h hours. Then find how much the plumber charge for a job lasting 3 hours.

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step-by-step explanation:

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral

what is the question? i am guessing you are looking for the area.

to find an area, you have to do length x width.

in this case, it would be 12 ft x 4 ft = 48 sq. ft

(1 km=1000m, 1m=100 cm)